| 摘要 |
PURPOSE: A deflection yoke is provided to adjust positive convergence in a stable manner by preventing a single magnet ring from rotating together with the other ring, while allowing assembly work between the spacer and the neck part to be easily carried out. CONSTITUTION: A deflection yoke comprises a coil separator(10) including a screen part coupled to a screen surface of a CRT, a rear cover(12) and a neck part(13) extended from the central surface of the rear cover, wherein the neck part has a plurality of cut-out grooves(13a) formed in the lengthwise direction of the neck part; a horizontal deflection coil and a vertical deflection coil arranged at the inner surface and the outer surface of the coil separator, and which generate deflection magnetic field for deflecting electron beam in horizontal and vertical directions; a ferrite core(16) arranged at the outer surface of the coil separator so as to reinforce magnetic field; a plurality of magnet rings(20) arranged at the neck part of the coil separator, and which correct positive convergence at the screen, and have quadrupole and bipolar yoke structures; a spacer(100) coupled to the neck part of the coil separator in such a manner that the spacer is interposed between the magnet ring having the bipolar yoke structure and the magnetic ring having the quadrupole yoke structure, so as to maintain a constant space between both magnet rings; and protrusions(110) formed along the inner periphery of the spacer and inserted into the cut-out grooves of the neck part of the coil separator, so as to prevent the spacer from rotating.
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